The ESA Infrared Space Observatory (ISO) satellite is a 3 axes pointed platform designed to make accurate pointed observations of astronomical objects and sources in the wavelength range between 2.5 and 200 microns. ISO is composed of a service module and a payload module which is a large cylindrical vacuum vessel. The vessel is in fact a cryostat (capacity of 2250 l of liquid He II) which contains the telescope and the four focal scientific instruments. The latter being cooled up to a temperature less than 4 K. The qualification of the payload requires the measurement respectively of: the image quality of the telescope through wave front error (WFE) measurements; and the optical alignment of the scientific instruments with respect to the telescope axis and the telescope focus, and this under cryogenic conditions. Consequently, since 1988, the FOCAL 5 IAL Space facility has been upgraded in order to perform the cryogenic optical tests of the ISO optical subsystems.


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    Title :

    IAL Space: A Test Laboratory for the ISO Cryogenic Payload


    Contributors:
    A. Cucchiaro (author) / M. Henrist (author) / J. P. Macau (author) / N. Ninane (author) / R. Blanpain (author)

    Publication date :

    1990


    Size :

    11 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    IAL SPACE: A test laboratory for the ISO cryogenic payload

    Cucchiaro, A. / Henrist, M. / Macau, J. P. et al. | NTRS | 1990



    The STEP cryogenic payload system

    Peters, J. D. / Bye, M. R. / Ben-Dor, B. et al. | British Library Conference Proceedings | 1996